There are many online services that will incorporate your business, however, none of those services will give you the advice and necessary information to make the best decision, not just how to start your business, but to maintain and protect your business interest.
The express purpose of having a business is to protect your personal assets from liability if something happens. This begins with creating and filing your business with the proper agency or institution, and then managing your business properly so as to avoid any future personal liability.
Many are unaware that filing your Articles or creating your LLC is just the first step in the process of creating a business entity. If you fail to execute the proper formalities in business practice, you open yourself up to personal liability, which is what you were trying to avoid in the first place.
There are annual maintenance issues, tax issues and other considerations that must be thoroughly understood in order to promote protection. This is the main reason the businesses created by online services are less than adequate—they lack the necessary one-on-one consultation and education that a lawyer can provide.